We had rather intensive PE today, and I'm totally washed out now. I felt so incredibly tired when I was walking home just now, and I'm just not in the mood for anything, which is vastly different from my mood before. Just now, during Biology practical, we plated the agar plates with E.coli bacteria. Our teacher said that E.coli can cause severe vomiting and diarrheoa, which made some of us extremely self-conscious about whether our gloves were touching our stuff or not. I desperately needed to sneeze halfway through plating the bacteria, and it was just terrible to have to hold the sneeze in.